831868349 has 4 divisors (see below), whose sum is σ = 895858236. Its totient is φ = 767878464.

The previous prime is 831868343. The next prime is 831868351. The reversal of 831868349 is 943868138.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67732900 + 764135449 = 8230^2 + 27643^2 .

It is a cyclic number.

It is not a de Polignac number, because 831868349 - 2¹⁶ = 831802813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 831868297 and 831868306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831868343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31994924 + ... + 31994949.

It is an arithmetic number, because the mean of its divisors is an integer number (223964559).

Almost surely, 2^831868349 is an apocalyptic number.

It is an amenable number.

831868349 is a deficient number, since it is larger than the sum of its proper divisors (63989887).

831868349 is a wasteful number, since it uses less digits than its factorization.

831868349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63989886.

The product of its digits is 995328, while the sum is 50.

The square root of 831868349 is about 28842.1280248181. The cubic root of 831868349 is about 940.4842642082.

It can be divided in two parts, 8318 and 68349, that added together give a palindrome (76667).

The spelling of 831868349 in words is "eight hundred thirty-one million, eight hundred sixty-eight thousand, three hundred forty-nine".